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Journal of Environmental Pathology, Toxicology and Oncology

Publicou 4 edições por ano

ISSN Imprimir: 0731-8898

ISSN On-line: 2162-6537

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 2.4 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 2.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.5 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00049 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.59 SJR: 0.429 SNIP: 0.507 CiteScore™:: 3.9 H-Index: 49

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Comparison of Genotoxicity of Textile Dyestuffs in Salmonella Mutagenicity Assay, In Vitro Micronucleus Assay, and Single Cell Gel/Comet Assay

Volume 23, Edição 4, 2004, 12 pages
DOI: 10.1615/JEnvPathToxOncol.v23.i4.30
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RESUMO

The mutagenicity of textile dyes is an important consideration for the assurance of consumer protection and work safety. The mutagenicity testing of textile dyestuffs is crucial for accurately predicting health risks for consumers and workers exposed to dyes. Unfortunately, these data are often lacking. We studied the genotoxic activity of ten selected commercial textile dyestuffs, which are made up of mixtures of azo dyes and azo metal complex dyes as well as two anthraquinone dyestuffs. We used the Salmonella mutagenicity assay and cultured human keratinocytes (HaCaT cell line). In the S. typhimurium strain TA98, with and without S9, eight often dyestuffs investigated, and in strain TA 100, with and without S9, six often dyes caused frameshift mutations and base-pair substitutions in the dose range of 1—5000 μg/plate in a dose-related manner. All dyes, including those negative in the Salmonella mutagenicity assay, induced clastogenic effects in the in vitro micronucleus (MN) test in HaCaT cells as direct-acting mutagens in the concentration range of 5—150 μg/mL and with maximum MN frequencies between 1.1 and 7.2%, compared to negative controls that showed 0.2—0.4% MN cells. In the single cell gel/comet assay, all ten dyestuffs investigated caused DNA damage in HaCaT keratinocytes. The alkaline (pH >13) version used is capable of detecting DNA single strand breaks, alkali-labile sites, and DNA—DNA/DNA—protein cross-linking. Under the conditions of these screening tests, the textile dyes investigated are direct-acting genotoxic substances. The HaCaT cells testing protocol proposed has been shown to be an appropriate test system for evaluating mutagenicity of textile dyes on a base level.

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